New Supergirl Clip Teases Livewire Twist

01/29/2017 04:51 pm EST

It looks like Livewire. It sounds like Livewire. But it isn't Livewire that Supergirl and Mon-El encounter in this new clip from Monday's "We Can Be Heroes" episode—though they don't know that at first.

The sneak peek begins in a National City Police Department underground garage, where a police officer opens fire on faux Livewire. The bullets have no effect. The Kryptonian and Daxamite superheroes soon arrive, and Supergirl gives faux Livewire a speech about how all of this will play out like it has before.

"Give it up Leslie," Kara says. "We've done this before. The same thing always happens: I win, you lose."

With a devilish smirk, her opponent responds, "I'm not Leslie."

While Supergirl tries to process that new and surprising information, her and Mon-El turn their attention to a mysterious electrical sound coming from behind them. They then see a large, bald man in a police uniform materialize from electrical energy.

What in the world is going on? You'll find out tomorrow!

After Livewire (guest star Brit Morgan) seemingly breaks out of prison, Supergirl (Melissa Benoist) is intent on recapturing her. After training Mon-El (Chris Wood), Supergirl takes him with her when she sees Livewire attack the NCPD but things go awry when Mon-El puts Supergirl before the citizens of National City. Meanwhile, James (Mehcad Brooks) decides to come clean with Kara, and M'Gann (guest star Sharon Leal) has a psychic attack and collapses into a coma.

Rebecca Johnson directed the episode written by Caitlin Parrish & Katie Rose Rogers.

"We Can Be Heroes" episode will air Monday, January 30 at 8 p.m. ET/PT on The CW.

MORE: Supergirl: Harley Quinn Smith Can't Believe She's On Her Favorite TV Show / Kevin Smith Thinks Supergirl Is Heading Toward the Legion of Super-Heroes / The Supergirl TV Show Made Kevin Smith Love the Character / New Featurette for Kevin Smith's Supergirl Lives Episode / White Martians Attack in Synopsis For Supergirl's "The Martian Chronicles" / Release Dates, Director Set For The Flash/Supergirl Musical

Disclosure: ComicBook is owned by CBS Interactive, a division of Paramount. Sign up for Paramount+ by clicking here.